Cloth-cutter.



N0 MODEL.

MIIIESSBS flaw/11 l1 M MM ' PATENTED APR. 5, 1904.

s R. JACOBS.

CLOTH CUTTER.

APPLICATION FILED our. 14. 1903.

THE cams PEYERS no rmoTo-uma.v wnmumoupn, c

UNITED STATES Patented April 5, 1904.

PATENT OFFICE.

CLOTH-CUTTER.

SPECIFICATION forming part of Letters Patent N0. 756,501, dated April 5, 1904.

Application filed October 14, 1903.

To all whom it may concern:

Be it known that I, SOLOMON R. J ACOBS, a citizen of the United States, and'a resident of the borough of Manhattan, in the city and State of New York, have invented anew and useful Improvement in Cloth-Cutters, of which the following is a specification.

My invention relates to cloth-cutters in which a reciprocating knife is driven at a high speed by suitable power, in the present instance by electricity, with the object in view of providing simple means for reciprocating the knife whereby the total weight of the cutter is reduced to a considerable degree.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 is a view of the cutter in side elevation, partly in section. Fig. 2 is a front View of the cutter with the presser-foot mechanism removed and the gearcasing cover swung open, and Fig. 3 is a detail view of the geared connection between the armature-shaft and crank-shaft.

The base of the cutter is denoted by 1 and the standard by 2, within which the knife 3'is mounted to reciprocate vertically. The standard 3 is surmounted by a gear-casing 4: and motor-casing 5, to which the handle 6 of the cutter is attached. The reciprocating knife 3 carries a rod 7 which is mounted to slide vertically in upper and lower bearings 8 and 9, the lower bearingQbeing in a guide-plate 10, secured by suitable fastening meansll within the gear -casing 4 adjacent to the top of the knife 3. The upper bearing 8 for the kniferod 7 is located in a removable plug 12, secured in the top of the gear-casing &.

The armature-shaft is denoted by 13, and it is provided with a spur-gear 1 1, fixed thereto within the gear-casing 4. This gear 14 intermeshes with an internal gear 15, carried by a disk 16, which disk is mounted to rotate upon a stud-axle 17, secured to the partition 18 between the gear-casing and motor-casing.

The disk 16 is provided on its face with a Serial No. 177,034. (No model.)

crank-pin 19, to which one end of a link 20 is pivoted, the other end of said link being pivoted on a stud 21, carried by a sleeve or collar 22, fixed to the knife-rod 7. It will, thus be seen that the disk 16 and stud-axle 17, together with the link 20, form a crank-shaft connection between the armature-shaft 13 and the knife-rod 7 for reciprocating the said rod vertically. This sleeve 22 is adjustably fixed upon the rod 7 by a set-screw 23, so that the position of the bottom of the knife 3 may be accurately adjusted. A swinging cover 2 1 is provided for the upper portion of the gear casing, so that access may be readily obtained thereto. The lower end of the gear-casing is closed by aplate 25, which plate supports the shank 26 of the presser-foot 27 of usual construction.

The driving mechanism for the knife hereinabove described is extremely simple and light, yet positive in its action, thus insuring an even operation of the knife under all conditions.

What'I claim is- 1. In a cloth-cutter, a motor-shaft, a spurgear thereon, a disk having an internal gear meshing with the said spur-gear, a knife-carrying rod mounted to reciprocate longitudinally, and a link connecting the rod and disk.

2. In acloth-cutter, a motor-casing, a closed gear-casing, a motor-shaft, a gear thereon within the gear-casing, a disk mounted in the gear-casing and geared to the motor-shaft gear, a vertically-reciprocating knife-carrying rod extended through the gear-casing, upper and lower bearings for the rod and a link connecting the disk to the rod at apoint between the bearings.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 13th day of October, 1903.

SOLOMON R. JACOBS.

Witnesses:

FREDK. HAYNES, HENRY THIERNE. 

